.flex-directions{
    display: flex;
    width: 500px;
}

.flex-directions div{
    width: 100px;
    height: 100px;
    background-color: darkcyan;
    margin: 1px;
}

.direaction-1{
    flex-direction: row;
}
.direaction-2{
    flex-direction: row-reverse;
}
.direaction-3{
    flex-direction: column;
}
.direaction-4{
    flex-direction: column-reverse;
}